开单合理项维护

src/main/java/com/diagbot/facade/BillManFacade.java

@@ -301,6 +301,7 @@ public class BillManFacade {
         }
         //修改成已存在规则
         if (billSaveVO.getRelationId() != null
+                && existRelation != null
                 && !billSaveVO.getRelationId().equals(existRelation.getRelationId())) {
             throw new CommonException(CommonErrorCode.IS_EXISTS, "规则已存在");
         }